
24 Hour Urine Cortisol Test
£50.00
Investigating chronic stress, unexplained fatigue, or hormonal imbalances? Get clear answers with a private Urine Cortisol test at Medical Diagnosis Victoria (MDX Victoria) in London.
Think of cortisol as your body’s built-in alarm system. Produced by your adrenal glands, this essential “stress hormone” helps you manage daily stress, regulate your energy, and support your immune system. While cortisol levels in your blood constantly jump up and down throughout the day, a 24-hour urine test acts like a time-lapse camera. It captures a complete picture of your total hormone production over a full day and night. Whether you are checking for adrenal gland disorders or monitoring an existing hormone condition, this comprehensive test provides the precise insights you need.
(Please note: This test requires a full 24-hour urine collection. You must contact our laboratory for specific instructions before booking an appointment.)
Private 24 Hour Urine Cortisol Test in London
Are you investigating symptoms of a hormonal imbalance, chronic stress, or an adrenal disorder? At Medical Diagnosis Victoria (MDX Victoria), we provide a comprehensive 24 hour Urine Cortisol test. By measuring your free cortisol levels over a full day, this test offers a highly accurate picture of your adrenal health and hormone production. Our expert clinical team in central London ensures a smooth and professional experience.
📊 Test Specifications
What is a Urine Cortisol Test?
The urine cortisol test measures the concentration of free cortisol excreted in your urine over a full 24 hour period. Cortisol is the main glucocorticoid hormone produced by your adrenal cortex and plays a central role in stress regulation, glucose metabolism, and immune modulation. Unlike serum cortisol in the blood, which fluctuates significantly throughout the day, urinary free cortisol reflects your overall hormone production over a complete circadian cycle.
Adrenal Function
Evaluating urinary cortisol is essential for:
- Investigating adrenal hyperfunction
- Detecting adrenal hypofunction
- Diagnosing cortisol excess
- Monitoring adrenal gland health
Metabolism & Stress
This test helps monitor your body by:
- Assessing physiological stress responses
- Evaluating glucose metabolism impacts
- Monitoring immune modulation
- Checking overall endocrine balance
Systemic Monitoring
The laboratory provides critical data to:
- Support Cushing syndrome investigations
- Complement serum or salivary tests
- Monitor cortisol regulation disorders
- Track hormone treatment progress
Why is Cortisol Testing Important?
Because cortisol is excreted unbound in the urine, measuring it this way completely avoids the influence of cortisol binding proteins found in the blood. This makes the 24 hour urine collection one of the most reliable methods for evaluating disorders related to cortisol excess or deficiency in endocrinology.
Evaluating Physical Symptoms
You should consider this test if you are actively experiencing physical shifts, such as:
- Unexplained, rapid weight gain, particularly around the midsection and upper back.
- Severe chronic fatigue, muscle weakness, or a sudden darkening of the skin.
- High blood pressure combined with elevated blood sugar levels.
Ongoing Medical Monitoring
Doctors frequently recommend urine cortisol testing to manage ongoing treatments and investigations, including:
- Screening for Cushing syndrome (cortisol excess).
- Complementary testing alongside serum (blood) or salivary cortisol measurements.
- Monitoring existing disorders of cortisol regulation.
Important 24 Hour Collection Notice
Please call the laboratory for specimen collection instructions before booking an appointment. This specific test requires a full 24 hour urine collection, and you will need to pick up a special container and follow specific guidelines to ensure an accurate reading.
Understanding Adrenal Health
A comprehensive 24 hour urine cortisol test provides essential clarity on your adrenal function. For further information on adrenal conditions such as Cushing syndrome in the UK, you can view the official NHS guide on Cushing syndrome.
Why Choose Medical Diagnosis Victoria (MDX Victoria)?
Specialist Laboratory Analysis
Your 24 hour urine sample is securely transferred to a specialist laboratory equipped to accurately measure precise hormone excretion levels, ensuring you receive highly reliable data.
Reliable 5 Day Turnaround
Specialist endocrinology testing requires meticulous analysis. We ensure your sample is processed efficiently, with comprehensive results available within 5 days.
Expert Central London Care
Conveniently located in Victoria, our clinic offers a welcoming and professional environment where you can coordinate your sample container pickup and drop off with total peace of mind.
Clear Pricing
£50.00 test fee with absolutely no hidden costs. Because this is a urine collection test, there is no phlebotomy fee required.
How To Read Your Laboratory Results
Your results will detail the total amount of free cortisol excreted in your urine over the 24 hour collection period. Extremely high levels often indicate an adrenal hyperfunction disorder like Cushing syndrome, while very low levels may point toward adrenal hypofunction, such as Addison’s disease. The report should always be assessed in conjunction with your medical history and clinical examination.
Results Timeline: Your comprehensive hormone report is typically available within 5 days of submitting your properly collected 24 hour sample.


Need Help? Private GP Consultations
If you have questions about your adrenal health, are experiencing extreme fatigue or unexplained weight gain, or need help interpreting abnormal cortisol results, we offer private GP consultations on site. Our clinical team can review your report and recommend the best next steps.
Frequently Asked Questions
Most Searched Online Questions About Cortisol
Related Health Categories
Take Control of Your Adrenal Health
Stop guessing about your hormonal symptoms. Secure your 24 Hour Urine Cortisol test at Medical Diagnosis Victoria (MDX Victoria) today. Remember to contact our laboratory for your special collection container, and let our expert team support your health journey with clear, accurate diagnostic answers.

